(4) Rename files to snake_case: update BUILD.gn, include paths, header guards, and DEPS entries

Mechanically generated by running this command:

tools_webrtc/do-renames.sh update all-renames.txt && git cl format

Then manually updating:

tools_webrtc/sanitizers/tsan_suppressions_webrtc.cc

Bug: webrtc:10159
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: I54824cd91dada8fc3ee3d098f971bc319d477833
Reviewed-on: https://webrtc-review.googlesource.com/c/115653
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26226}
diff --git a/examples/androidnativeapi/jni/android_call_client.h b/examples/androidnativeapi/jni/android_call_client.h
index d456e9c..5ab61f4 100644
--- a/examples/androidnativeapi/jni/android_call_client.h
+++ b/examples/androidnativeapi/jni/android_call_client.h
@@ -8,20 +8,20 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef EXAMPLES_ANDROIDNATIVEAPI_JNI_ANDROIDCALLCLIENT_H_
-#define EXAMPLES_ANDROIDNATIVEAPI_JNI_ANDROIDCALLCLIENT_H_
+#ifndef EXAMPLES_ANDROIDNATIVEAPI_JNI_ANDROID_CALL_CLIENT_H_
+#define EXAMPLES_ANDROIDNATIVEAPI_JNI_ANDROID_CALL_CLIENT_H_
 
 #include <jni.h>
 
 #include <memory>
 #include <string>
 
-#include "api/peerconnectioninterface.h"
-#include "rtc_base/criticalsection.h"
+#include "api/peer_connection_interface.h"
+#include "rtc_base/critical_section.h"
 #include "rtc_base/scoped_ref_ptr.h"
 #include "rtc_base/thread_checker.h"
 #include "sdk/android/native_api/jni/scoped_java_ref.h"
-#include "sdk/android/native_api/video/videosource.h"
+#include "sdk/android/native_api/video/video_source.h"
 
 namespace webrtc_examples {
 
@@ -76,4 +76,4 @@
 
 }  // namespace webrtc_examples
 
-#endif  // EXAMPLES_ANDROIDNATIVEAPI_JNI_ANDROIDCALLCLIENT_H_
+#endif  // EXAMPLES_ANDROIDNATIVEAPI_JNI_ANDROID_CALL_CLIENT_H_